Well, the Revolve Design solution isn't another docking solution for your iPAQ only but a complete new "Road Warrior" concept as it also includes an optional keyboard:

RoadWriter is a revolutionary new concept in Mobile Computing. We've combined UniMount with an integrated Touch -Type Keyboard (fully optimized for handheld computers) to provide efficient, in-vehicle data entry while providing a secure, rugged, mobile mounting platform for your handheld. RoadWriter offsets the need to use bulky, expensive laptops or dedicated terminals while on the road.

I hope to get one of it soon to be reviewed here on PPCW.Net. However, the concept in general looks very promising.

Interactive Products &amp; Revolve Design are introducing two new cradles. The first cradle will accommodate the Ipaq 2000 series and has power, connectivity and a keyboard option. The second will have a universal modular design that will work with every PDA on the market. Many mounting options are already available. Check out our web site http://www.laptraveler.com